Laminated glass pane with electrical function and connection element

Abstract

A laminated glass pane with electrical function and connection element is described. The laminated glass pane has at least two individual glass panes, which are areally connected to at least one thermoplastic intermediate layer. The laminated glass pane further has at least one electrically functional layer, which is situated between the at least two individual glass panes at least one foil conductor, which is electrically conductively connected to the at least one electrically functional layer, and at least one housing with at least one electrical feed line and at least one electrical line connection. The at least two individual glass panes has at least one undercut glass pane, wherein the at least one foil conductor runs without an overhang around a lateral edge of the at least one undercut glass pane.

The invention claimed is: 
     
       1. A laminated glass pane comprising:
 at least two individual glass panes; 
 at least one thermoplastic intermediate layer, which is situated between the at least two individual glass panes; 
 at least one electrically functional layer, which is situated between the at least two individual glass panes; 
 at least one foil conductor, which is electrically conductively connected to the at least one electrically functional layer,
 wherein the at least one foil conductor is led out from the laminated glass pane, 
 wherein the at least one foil conductor is fixed on at least one outer side of the laminated glass pane, and 
 wherein the at least one foil conductor has, on the at least one outer side of the laminated glass pane, a connection location for making electrical contact; 
 
 a single-part housing;
 wherein the at least two individual glass panes and at least one spring contact element are disposed in the single-part housing, 
 wherein the single-part housing is adhesively bonded or clamped on an outer side of at least one of the at least two individual glass panes, 
 wherein the at least one spring contact element is clamped to the connection location so as to make electrical contact with the at least one foil conductor when the single-part housing is adhesively bonded or clamped on an outer side of at least one of the at least two individual glass panes, 
 wherein a position of the at least one spring contact element is coordinated in the single-part housing to provide an assembly with the connection location of the at least one foil conductor, 
 wherein at least one of the at least two individual glass panes has an undercut, and 
 wherein the at least one foil conductor runs without an overhang around a lateral edge of the at least one of the at least two individual glass panes having the undercut. 
 
 
     
     
       2. The laminated glass pane according to  claim 1 , wherein the at least two individual glass panes contain partially tempered glass with a thickness of 4 mm to 10 mm, the at least one thermoplastic intermediate layer contains polyvinyl butyral with a thickness of 0.7 mm to 0.9 mm, and the at least one electrically functional layer contains at least one metal layer and at least one metal oxide layer. 
     
     
       3. The laminated glass pane according to  claim 1 , wherein the at least one electrically functional layer is situated on at least one inner side of the at least two individual glass panes. 
     
     
       4. The laminated glass pane according to  claim 1 , wherein the at least two individual glass panes have an undercut of 0.1 mm to 0.5 cm. 
     
     
       5. The laminated glass pane according to one of  claim 1 , wherein the at least one electrically functional layer is a heating layer. 
     
     
       6. The laminated glass pane according to one of  claim 1 , wherein an interior of the single-part housing is sealed against gases, water, or moisture by a sealing means. 
     
     
       7. The laminated glass pane according to  claim 1 , wherein the connection between the at least one electrically functional layer and the at least one foil conductor is adhesively bonded or clamped. 
     
     
       8. The laminated glass pane according to  claim 1 , wherein the connection location of the at least one foil conductor is situated on a side facing away from the at least two individual glass panes. 
     
     
       9. A method for producing the laminated glass pane, comprising:
 introducing at least one foil conductor connected to at least one electrically functional layer into at least two individual glass panes; 
 laying the at least one foil conductor around a lateral edge of at least one of the at least two individual glass panes; 
 adhesively bonding the at least one foil conductor on an outer side of one of the at least two individual glass panes, wherein the at least one foil conductor includes a connection location at the outer side of one the at least two individual glass panes; 
 adhesively bonding or clamping a single-part housing onto at least one of the at least two individual glass panes, wherein at least one spring contact element is disposed in the single-part housing; 
 making electrical contact between the at least one spring contact element and the connection location of the at least one foil conductor when the single-part housing is bonded or clamped to the at least two individual glass panes; and 
 coordinating a position of the at least one spring contact element in the single-part housing to provide an assembly with the connection location of the at least one foil conductor. 
 
     
     
       10. A method comprising:
 providing laminated glass pane according to  claim 1 ; and 
 applying a voltage of 90 V to 400 V to the at least one electrically functional layer of the laminated glass pane. 
 
     
     
       11. A method comprising:
 providing laminated glass pane according to  claim 1 ; and 
 using the laminated glass pane as a functional or decorative individual piece, as a built-in part in furniture, devices, or buildings, or as in means of transportation on land, in air, or on water. 
 
     
     
       12. A method comprising:
 providing a laminated glass pane according to  claim 1 ; and 
 using the laminated glass pane as an electrical heating element. 
 
     
     
       13. The laminated glass pane according to  claim 4 , wherein the at least two individual glass panes have an undercut within a range of 0.1 mm to 0.5 mm. 
     
     
       14. The method according to  claim 10 , wherein applying a voltage comprises the voltage applied to the at least one electrically functional layer is within a range of 100 V to 250 V. 
     
     
       15. The method according to  claim 11 , wherein using the laminated glass pane comprises the laminated glass pane is used as a windshield, rear window, side window, or glass roof. 
     
     
       16. The method according to  claim 15 , wherein using the laminated glass pane in the means of transportation comprises using the laminated glass pane in a motor vehicle. 
     
     
       17. The laminated glass pane according to  claim 1 , wherein the spring contact element comprises a feed line connected to a power supply or to an external electrical control system. 
     
     
       18. The method of producing a laminated glass pane according to  claim 9 , wherein the spring contact element comprises a feed line, and further comprising connecting the feed line to a power supply or to an external electrical control system. 
     
     
       19. The laminated glass pane according to  claim 2 , wherein at least one metal layer of the at least one electrically functional layer contains a silver layer. 
     
     
       20. The laminated glass pane according to  claim 6 , wherein the sealing means is an acryl-based or polyurethane-based adhesive. 
     
     
       21. The laminated glass pane according to  claim 1 , wherein the single-part housing covers a portion of the at least one foil conductor that is led out from the laminated glass plane, and wherein the single-part housing further covers a portion of the at least one foil conductor that is fixed on at least one outer side of the laminated glass pane. 
     
     
       22. The method of producing a laminated glass pane according to  claim 9 , wherein adhesively bonding or clamping the single-part housing includes covering a portion of the at least one foil conductor extending around the lateral edge of at least one of the at least two individual glass panes, and includes covering a portion of the at least one foil conductor bonded on the outer side of one of the at least two individual glass panes. 
     
     
       23. The laminated glass pane according to  claim 1 , wherein the single-part housing is a U-shaped structure that covers the lateral edges of the at least two individual glass panes, a portion of the outer side of the laminated glass pane, and the connection location of the at least one foil conductor. 
     
     
       24. The laminated glass pane according to  claim 1 , wherein the single-part housing is an L-shaped structure that covers the lateral edges of the at least two individual glass panes and the connection location of the at least one foil conductor. 
     
     
       25. The laminated glass pane according to  claim 1 , wherein the at least one spring contact element includes a single conductive member with at least one curve or bend, whereby the coordination of the single conductive member inside of the single-part housing electrically connects the at least one curve or bend of the conductive member to the at least one foil conductor at the connection location. 
     
     
       26. A laminated glass pane comprising:
 at least two individual glass panes; 
 at least one thermoplastic intermediate layer, which is situated between the at least two individual glass panes; 
 at least one electrically functional layer, which is situated between the at least two individual glass panes; 
 at least one foil conductor, which is electrically conductively connected to the at least one electrically functional layer,
 wherein the at least one foil conductor is led out from the laminated glass pane, 
 wherein the at least one foil conductor is fixed on at least one outer side of the laminated glass pane, and 
 wherein the at least one foil conductor has, on the at least one outer side of the laminated glass pane, a connection location for making electrical contact; 
 
 at least one housing;
 wherein the at least two individual glass panes and at least one spring contact element are disposed in the housing, 
 wherein the at least one housing is adhesively bonded or clamped on an outer side of at least one of the at least two individual glass panes, 
 wherein the at least one spring contact element is clamped to the connection location so as to make electrical contact with the at least one foil conductor when the at least one housing is adhesively bonded or clamped on an outer side of at least one of the at least two individual glass panes, 
 wherein a position of the at least one spring contact element is coordinated in the at least one housing to provide an assembly with the connection location of the at least one foil conductor, 
 wherein the at least one spring contact element includes a single conductive member with at least one curve or bend, whereby the coordination of the single conductive member inside of the single-part housing electrically connects the at least one curve or bend of the conductive member to the at least one foil conductor at the connection location, 
 wherein at least one of the at least two individual glass panes has an undercut, and 
 wherein the at least one foil conductor runs without an overhang around a lateral edge of the at least one of the at least two individual glass panes having the undercut.